Aston Villa announced on Friday that captain Stiliyan Petrov has been diagnosed with acute leukemia, according to BBC Sport. The condition was diagnosed following tests after Saturday’s match.
"We expect to learn more about the situation in due course," the club announced. "Stiliyan is cherished by many and he will get from Villa every ounce of love and support that we have to help bring this to a positive conclusion. During this time we ask that Stiliyan's privacy is placed ahead of all inquiries and trust that we will share information as we receive it."
Neil Lennon, Celtic FC manager, tweeted his support for Petrov, as did former Villa midfielder Ian Taylor.
Petrov joined Villa from Celtic in 2006, and has 13 goals in 219 appearances.